Abstract

Fishes of the Loricariidae family, known as “cascudos”, constitute an endemic group in Neotropical freshwaters. In this study, were cytogenetically examined two species of Loricariidae (Pterygoplichthys anisitsi Eigenmann & Kennedy, 1903 and Farlowella amazonum (Günther, 1864) belonging to Hypostominae and Loricariinae subfamilies respectively) from Iguatemi River. Our study provide the first description regarding C-band and fluorochromic analysis in F. amazonum. In Farlowella amazonum, diploid number was 58 chromosomes, with single Ag-NOR and heterochromatic blocks in centromeric regions of some chromosomes and large subtelomeric blocks were evidenced on the long arm of the pair 27, being this region CMA3+/DAPI-. The Pterygoplichthys anisitsi showed diploid number equal 52 chromosomes, with single Ag-NOR and heterochromatic blocks in centromeric and telomeric regions of some chromosomes and conspicuous large telomeric blocks on the long arm of the pair 10, being this region CMA3+/DAPI-. The results show that karyotype formula is nonconservative in P. anisitsi and F. amazonum.

Addeddate

2025-03-16 13:15:40

Bhl_virtual_titleid

210879

Bhl_virtual_volume

v.9:no.1 (2015)

Call number

10_3897_CompCytogen_v9i1_8804

Call-number

10_3897_CompCytogen_v9i1_8804

Foldoutcount

0

Genre

article

Identifier

cytogeneticanal9fern

Identifier-ark

ark:/13960/s2hvbkxk816

Identifier-bib

10_3897_CompCytogen_v9i1_8804

Identifier-doi

10.3897/CompCytogen.v9i1.8804

Issue

1

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

81

Page_number_module_version

1.0.5

Page_range

67-78

Pages

12

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

Comparative Cytogenetics 9(1)

Year

2015

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